When I first started learning these chapters, I found the questions easy, but soon the equations started to become more complicated and challenging, and thus I did not fully understand how to expand and factorise them. I found factorisation much harder compared to expansion as there were so many methods to use for different types of equations, such as grouping, and special identities, which I found hard to memorize. But after much practice, I can now solve questions like these without much difficulty. In addition, creating this blog has truly helped me understand expansion and factorisation more clearly.
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